Sealed, air-conditioned buildings and other closed spaces utilizing circulated forced air, like commercial airliners, are also criticized as breeding grounds for communicable diseases.

空调化的封闭建筑及其他象商业客机等使用循环压力送风的封闭空间，也被批评为传染性疾病的滋生地。

youdao

This paper discusses closed water breeding techniques of eel from the design of the pool, treatment of seed eels and management.

本文主要从鳝池的设计、苗种处理、日常管理等方面探讨了鳝鱼的静水无土养殖技术。

youdao

Soilless breeding eel can be further divided into running water breeding and closed water breeding.

鳝鱼无土养殖可分为流水无土养殖和静水无土养殖两种类型。

youdao

Beijing has not closed down the breeding businesses and reacts only when there is negative publicity.

FORBES: Tigercide

Since extremists first targeted small animal-breeders, in 1997, they have closed down four outfits, breeding dogs, cats, monkeys and rabbits.

ECONOMIST: Animal rights extremists